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6953 Davepierce (1986 PC1)
Classification: Main-belt Asteroid          SPK-ID: 2006953
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1754917294449911 3.3852e-08  
a 3.11751318438214 1.523e-08 au
q 2.570415404087357 1.0459e-07 au
i 1.747882139601076 4.831e-06 deg
node 157.323549091151 0.00010457 deg
peri 131.797565128726 0.00010544 deg
M 76.93986579084927 1.217e-05 deg
tp 2458570.805496098567
(2019-Mar-28.30549610)
6.8469e-05 TDB
period 2010.531469147865
5.50
1.4733e-05
4.034e-08
d
yr
n .1790571326658125 1.3121e-09 deg/d
Q 3.664610964676923 1.7903e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2376  
   data-arc span      25380 days (69.49 yr)  
   first obs. used      1951-02-04  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4698  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:45:22  

Additional Information
 Earth MOID = 1.55453 au 
 Jupiter MOID = 1.51986 au 
 T_jup = 3.192 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8   n/a MPO502219  
diameter diameter 15.849 km 0.246 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6953 Davepierce           Discovered 1986 Aug. 1 by E. F. Helin at Palomar.
David A. Pierce (b. 1936) has developed and taught college-level astronomy and physics courses for classroom, television and online distribution. He also directed gifted high-school students in observing and computing orbits for minor planets in the Summer Science Program at the Thacher School in Ojai.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020128/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1986 PC1 = 1975 RK1 = 1985 GH = 1990 EU5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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